10. ‘The Internet Is Coming’ (2013 Special)

In this hour-long final episode, Jen and Roy become internet-famous for all the wrong reasons when an incriminating video of them goes viral. Also, Roy struggles to show his girlfriend that he can be emotional, while Moss discovers that wearing women’s trousers gives him new confidence and Douglas takes part in Secret Millionaire.

Trivia: This final episode was broadcast just over three years after Season 4 had ended. A fifth season was originally planned, but series creator Graham Linehan decided that it would be best to wrap things up with a single hour-long special instead.

9.‘Yesterday’s Jam’ (Season 1 Episode 1)

Jen arrives for her first day at Reynholm Industries to find that she’s been made Head of IT, after lying on her CV about having a lot of experience with computers. She meets her new co-workers, Moss and Roy, who notice her lack of technical knowledge and take a dislike to her, until she promises that she will try to make them popular.

Trivia: Graham Linehan created the role of Moss with Richard Ayoade in mind. Linehan has said that he was initially averse to casting an Irish actor as Roy, but Chris O’Dowd gave such a good audition that he couldn’t turn him down. O’Dowd already knew Katherine Parkinson from drama school and suggested that she audition for the part of Jen, which was proving difficult to cast.

8. ‘From Hell’ (Season 3 Episode 1)

Jen panics when Roy says that he recognises the builder who’s working on her house from the TV show ‘Builders From Hell’. Meanwhile, Roy tries to teach Moss how to stand up to bullies, and Douglas finds a gun hidden in his desk.

Trivia: This episode features a cameo from Chris Morris as Denholm, who exited the show in the second episode of Season 2. The scene where Denholm tries to lead Douglas towards Hell is the first and only time the father and son are seen interacting with each other in the show.

7. ‘Return of the Golden Child’ (Season 2 Episode 2)

The police arrive at Reynholm Industries because of “irregularities in the pension fund” and Denholm promptly jumps out of a window. As the IT department prepare to attend Denholm’s funeral, Roy becomes obsessed with the result of a quiz which predicts that he is nearing his own death.

Trivia: This episode marks the first appearance of Matt Berry as Douglas Reynholm. Strangely, Denholm’s wife is played in this episode by Belinda Stewart-Wilson (perhaps best known as Will’s mum in The Inbetweeners), who would go on to play another role in The IT Crowd’s fourth season – Douglas’ wife!